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1877-2284 — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1877-2284: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 937 OVERALL, hole_diameter: 0.765 INCHES NOMINAL0.765 INCHES NOMINAL IN, outside_diameter: 1.875 INCHES NOMINAL1.875 INCHES NOMINAL IN, material_thickness: 0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN, internal_keyway_width: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN, internal_keyway_quantity: 11. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-262-6138, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1877-2284
NSN: 5310-00-262-6138
FSC: 5310 — Nuts and Washers
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY 937 OVERALL
hole_diameter0.765 INCHES NOMINAL0.765 INCHES NOMINAL IN
outside_diameter1.875 INCHES NOMINAL1.875 INCHES NOMINAL IN
material_thickness0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN
internal_keyway_width0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
internal_keyway_quantity11
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_bottom_of_internal_keyway0.492 INCHES NOMINAL0.492 INCHES NOMINAL IN
NSN5310-00-262-6138
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1877-2284 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DISTANCE FROM CENTERLINE TO BOTTOM OF INTERNAL KEYWAY: 0.492 INCHES NOMINAL0.492 INCHES NOMINAL IN
•
INTERNAL KEYWAY WIDTH: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.875 INCHES NOMINAL1.875 INCHES NOMINAL IN
•
INTERNAL KEYWAY QUANTITY: 11
•
MATERIAL THICKNESS: 0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY 937 OVERALL
•
HOLE DIAMETER: 0.765 INCHES NOMINAL0.765 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO BOTTOM OF INTERNAL KEYWAY0.492 INCHES NOMINAL0.492 INCHES NOMINAL IN
INTERNAL KEYWAY WIDTH0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.875 INCHES NOMINAL1.875 INCHES NOMINAL IN
INTERNAL KEYWAY QUANTITY11
MATERIAL THICKNESS0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 937 OVERALL
HOLE DIAMETER0.765 INCHES NOMINAL0.765 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
01877-2284Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DE61459Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1877-2284?
1877-2284 is a WASHER,KEYWAY.
What parts can replace 1877-2284?
There are 2 known substitutes for 1877-2284: 01877-2284, DE61459. Substitute compatibility should be verified for your specific system.
What is the NSN for 1877-2284?
1877-2284 is cataloged in the U.S. Government catalog under NSN 5310-00-262-6138. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.